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MAX9768

更新时间： 2024-11-20 14:57:39
品牌 Logo 应用领域
亚德诺 - ADI 放大器
页数 文件大小 规格书
23页 1574K
描述
10W、单声道、D类扬声器放大器，带有音量控制

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中文翻译

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MAX9768 数据手册

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EVALUATION KIT AVAILABLE  
Click here for production status of specific part numbers.  
MAX9768  
10W Mono Class D Speaker  
Amplifier with Volume Control  
General Description  
The MAX9768 mono 10W Class D speaker amplifier pro-  
vides high-quality, efficient audio power with an integrated  
volume control function.  
Features  
● 10W Output (8Ω, PV  
= 14V, THD+N = 10%)  
DD  
● Spread-Spectrum Modulation  
● Meets EN55022B EMC with Ferrite Bead Filters  
● Amplifier Operation from 4.5V to 14V Supply  
The MAX9768 features a 64-step dual-mode (analog or  
digitally programmable) volume control and mute function.  
The audio amplifier operates from a 4.5V to 14V single  
supply and can deliver up to 10W into an 8Ω speaker with  
a 14V supply.  
2
● 64-Step Integrated Volume Control (I C or Analog)  
● Low 0.08% THD+N (R = 8Ω, P  
= 6W)  
OUT  
L
● High 77dB PSRR  
A selectable spread-spectrum mode reduces EMI-  
radiated emissions, allowing the device to pass EMC  
testing with ferrite bead filters and cable lengths up to 1m.  
The MAX9768 can be synchronized to an external clock,  
allowing synchronization of multiple Class D amplifiers.  
● Two t  
Times Offered  
ON  
• MAX9768—220ms  
• MAX9768B—15ms  
● Low-Power Shutdown Mode (0.5μA)  
● Short-Circuit and Thermal-Overload Protection  
The MAX9768 features high 77dB PSRR, low 0.08%  
THD+N, and SNR up to 97dB. Robust short-circuit and  
thermal-overload protection prevent device damage during  
a fault condition. The MAX9768 is available in a 24-pin thin  
QFN-EP (4mm x 4mm x 0.8mm) package and is specified  
over the extended -40°C to +85°C temperature range.  
Pin Configuration located toward end of data sheet.  
Ordering Information located at end of data sheet.  
Applications  
● Notebook Computers  
● Flat-Panel Displays  
● Multimedia Monitors  
● GPS Navigation Systems  
● Security/Personal Mobile Radio  
Simplified Block Diagram  
MAX9768 EMI WITH FERRITE BEAD FILTERS  
3.3V  
4.5V TO 14V  
(V = 12V, 1m CABLE, 8Ω LOAD)  
DD  
40  
35  
30  
25  
20  
15  
10  
5
SPEAKER  
AUDIO  
INPUT  
FILTERLESS  
CLASS D  
SPEAKER  
OUTPUT  
OVER 20dB MARGIN  
TO EN55022B LIMIT  
SHDN  
MUTE  
ANALOG OR  
I C VOLUME  
CONTROL  
2
0
MAX9768  
0
100 200 300 400 500 600 700 800 900 1000  
FREQUENCY (MHz)  
19-0854; Rev 5; 11/20  
1234567...23

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